Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'f53685e60879e37e48c7c05f115ef111fc1bbe18bab7519bf9c513cdb8482a70' 
  AND token = 'aYhe2rXJNU2ba1MUkY2efgE+Kd0C4qED8TGPokT239A=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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