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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'ced58917b6ac4517313ac67b2bf0337f072d1cb70cc14b042c8853c9c5d022ee' 
  AND token = '1NdTomI60obOiC/PsR1zat902e/4cUGZvY8dqbxcMfc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00043

JSON explain

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