Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'f1692ff1caa90cd265bc45f0142eb9a3ced49a417516cd5db38841fbde0c1afd' 
  AND token = 'YsrRSlF/BO24DGaqkmGyUUNLmORSNzzmVlA6yrci8Jk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00035

JSON explain

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