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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '084aa582f771a7b27fac796818d33b22904d2eb4fdd8e78ddc936692d32c6eed' 
  AND token = 'bNdiVY4N0H2HKQaQw+HnudrXF0r4l1LCWSBHPy3NN1g=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00018

JSON explain

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