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SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'f1905b314398312608bf624ddf11ee68ff27be8e445824f896c9fa9f7d4f25bc' 
  AND token = 'bLzh5ANcUjAHt1e8FdAs0VS98plNV0ol3Fcl+SFRfZ0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00068

JSON explain

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