Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'cdb7596eab2269c625248a5a0679e7cc84afc13abde391b3ed91f7aa3a99a6b1' 
  AND token = 'HukMmYumMFBX2+auD6uilxv+BJCRAYPf4CuFcwBhz08=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00037

JSON explain

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