Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '697afe091184ffa308e5698cae30bf9c852ee13092b26f154fa488988fd5b6b4' 
  AND token = 'E3WYkuYq6FIKePVwFiyUrMIgNKrB6Hzby4xsRs/3Iy0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00035

JSON explain

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