Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '1b0122274734b9b69157ae22f6c7a2e0c244945b21f76ac298a0d5abe9d57920' 
  AND token = 'r8cwepUgU+O9Kx10OlJ7czJYVabDjzWKSpGAspeK/Kw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00043

JSON explain

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