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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '654f6fdd82d27d0b5751bbdffee3dcd06323d3f35e361d18c1217465157eab94' 
  AND token = 'Nr+K5HKUxTlDcHmnDWx4FkEMGqwH/EMhUdwnJdIGVeU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00116

JSON explain

{
  "query_block": {
    "select_id": 1,
    "message": "no matching row in const table"
  }
}