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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '19238dbcc701f1b7dd1f6255e122928a5ad9255eb2d3b0b1ea4522f5bac48d12' 
  AND token = 'IGF+x+Jsa8trve7BLmoVVpu6jlar2+g2wob3mEkfy6o=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00025

JSON explain

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