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SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'c79cbaa1b72da83785136b751e82483b527f23d9ab72097135c2393006eb32e7' 
  AND token = '94YI6m/DH96N3AzuC5qyPHr2jvCBEPV7GX3pBAao2s0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00041

JSON explain

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