Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '444f7690f28ae5f0289e391d5e49ff7cb2b7014a445181b00d6fe1dd381c73ce' 
  AND token = '33rc+kMz9AVLAaPX+x28gA/AWKbt51MebeR31ngHnW4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

{
  "query_block": {
    "select_id": 1,
    "table": {
      "message": "Impossible WHERE noticed after reading const tables"
    }
  }
}