Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'e7b956e4436294612ac3ae0919853429a0ae4b4c2d3076be8d1f31990230a587' 
  AND token = 'bPkmrqE4vVA1iHhImwn4q53sqhXXcdmf058VGieImhc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00040

JSON explain

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