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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '61de8ae05f378b0b11de5c332c7fb06863871e43e8b38e26194ad825af8db7e5' 
  AND token = 'w/j3DrP5NFj3P8IwfXxkT6Kdp95jzPSzNeZX2KgsgNU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00055

JSON explain

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