Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '58f949fc22ebb85a2f1848230123764f67e5031716418d6c09858734e0b1e606' 
  AND token = 'qpPpGNH3vMUN9+d/cerFvlA7UTDxMi+Qt83tquf+BEc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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