Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '091b68af99394edc49ed3b069c41d267eaa2c623808d689752f0300cfbd118fd' 
  AND token = 'lg12Nm7/dKCSR0/GQJgN5NSSqRPKT61PBHnqBcn1OWc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00026

JSON explain

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