SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '06edfe2767b8594ef38909d8d3182c23f14e0640587ae8f419756eb74a6c086f' 
  AND token = 'XuRaYJU6B/0+4UPSGYwXVmryVNIt2UlnOXIXc88vLRg=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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