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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '11259179d809ef56df43f99e0b1c15794e935529e6b79491202c09d80ab90a69' 
  AND token = '+C6jjfIj6q8OGd3jypOKfAFVYW04wZQqVV5KRXxxxZU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00023

JSON explain

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