Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '07cdcefc099a78dfacd265e71562f6961df003180c87b60a4467dd5963aa60b6' 
  AND token = 'esLmoM7eqSnpknBEoADXNI1rgQbU+npD4bxoSKR8jK8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00015

JSON explain

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