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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '7489ed4ce6ba479fa9daac5858b68ef5db0c61aa7e0e9fc4840242b39916cb71' 
  AND token = 'H0Ii9xU6NWakqJDhQOdWZmJp96LHpEW5QyT7pBVVZT4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00089

JSON explain

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