Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'b07ad90082e0e745111e59c18ca74d29b12ded3dd244a477e254cc40f4173dd9' 
  AND token = 'DuR0EyGzJ/ikWPIshjsHuF/uvnnspjrN5MPuA0FsOSo=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00045

JSON explain

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