Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '48e834cffd6ca9f8a19e80d2f9cf2730080a52f18e37b025a78d40e14158295e' 
  AND token = 'd8QivCps/a0qAvtm7CkJ5wWazwYnu2j9ud+mytpO2R0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00036

JSON explain

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