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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'e65dfca6c72d1231dc0fc2076480fc3615a823ad00495645e33a48f461d897b8' 
  AND token = 'T7CVrn4hqbPi+z+d3bzecNWg2wYGP0LCxgL37tqsOtQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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