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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '65329227f536085ff4963452a7ae8a996f233bf3ebce79b62e98560213df21ad' 
  AND token = 'g09AWRdEHEhdBq58vGIoJf08cT4pF0OBo2+p3ZqSP/A=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00026

JSON explain

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