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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '7c3fbb81249c62566d5a5764835acd0421b99a59725d7b83977988b444d96762' 
  AND token = 'QJoKEbbIP3A7DEz+6Cprq0hOJf+Q2/o+ItqGtBbf17U=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00090

JSON explain

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