Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'c07c7660fee299859a5e60574e32ab9e538a389eb53ccc3ee7db58d70e5a9d48' 
  AND token = 'vVPU4t4Aq7d5ba8KhfbYul13reQlQwmWV5u7APrKQ+4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00046

JSON explain

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