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SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'd902224a3d52ebe18b08cddae2555d91e1fa2d95635c8f5f4a8f4a13322c45e5' 
  AND token = 'EzWrjDQ37YGlFQnoFdA5rrl2E4XGmdzFMNyvDxi+f4g=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00038

JSON explain

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