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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'f87245eb2a63c35cb348a6b11463807c7063e907f787fab699d902bd4d6b61d2' 
  AND token = 'VWpbnaUFbEuel7cn1haVyaSi8NAguk783d9lYr8ImII=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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