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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'edeaadb233844813d52f4d57d9d4c7ae1462fc61268db74c10d5aef741e9a5b0' 
  AND token = 'Uh0jRdoxFo+/P5ZpI8Hh2m/0aoUrUa3hr9jeP8ePk+U=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00021

JSON explain

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