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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'f717e94a05faaf40cc5369df97478bdce6d3304ca378a02acb230454d3632636' 
  AND token = '/TMNrw4/tnbHtbHUI7NtVT2uu6Qc00TWZlGTSJN0US8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00015

JSON explain

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