Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'fffbb6d680526bb0fec328d63ff98e27af1bd56643fb686883746a14bf0b857d' 
  AND token = 'zBI5GVSRLx+is76oDmHxzKS3Bw58SbNa1b+SWUClqF4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00021

JSON explain

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