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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'daf281b5957d9e46706fd1f4eb839579b2a55b737089bc4dafba073e4c2207e8' 
  AND token = 'EvKnnC6wwlcat7IcB8VFvQBVVU656s9YH5SHjIwwQF4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00025

JSON explain

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