Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '5fbaf1af983c2084762661570709bcd061347e80fe16d053ed88ec9393d1673e' 
  AND token = 'M3UhypBJ+cpJtxvTTnoimFASYjXi3YaG4M+TOHwTQH4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00026

JSON explain

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