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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '873d3fb1469e10300b762efe9fa2cd6933fa7b5f25d14b311f7411fa3780009f' 
  AND token = 'knJWwVxbJ23Oa+IHr+s+M/p7E+URmEejK3rBDbSnlbM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00033

JSON explain

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