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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '1c35581c38b641a491e20b748058051d3262cdec5e6ce05b10bdf9fc52c09127' 
  AND token = 'ClgnfOnhnvyLsf4dfBTgg6cfkLCvDBMUvsNN4Edi3rs=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00033

JSON explain

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