Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'c09507acd7fc12aa4e2051486cd816aba11442b6009f3a0a3bdd352f80b4a89b' 
  AND token = 'R4PkurQ/Iue1k7KD3eucDW+683q10I/Zqoe9+ApAh+M=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00032

JSON explain

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