SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '33a817245757812b9d24ab6b2bc09559aa5642f7111927c391243915e57ea6b4' 
  AND token = 'Z+laRZZNO61BwfxtVxdjOAvhzkh6u3FqS7Djof5sqNo=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00040

JSON explain

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